# Set up a postgresql database and a redis server for the integration tests.

# Set up a PostgreSQL database for the integration tests.
#
# Preconditions:
# - PostgreSQL must be installed on the system.
# - The `initdb`, `pg_ctl`, and `psql` commands must be available in the PATH.
#
# Postconditions:
# - A temporary PostgreSQL data directory will be created and initialized.
# - PostgreSQL will be started using a Unix socket.
# - A PostgreSQL user and database named "sharkey" will be created.
create_tmp_psql() {
	export PGDATA=$(mktemp -d)

	# Initialize the PostgreSQL data directory
	initdb -D $PGDATA -U postgres

	# Start PostgreSQL using Unix sockets
	pg_ctl -D $PGDATA -l $PGDATA/logfile start -o "-k $PGDATA --listen-addresses=''"
	until pg_isready -h $PGDATA; do sleep 1; done
	echo "PostgreSQL started with Unix socket at $PGDATA"

	# Create a "sharkey" user and database
	psql -h $PGDATA -c "CREATE USER sharkey" -U postgres
	psql -h $PGDATA -c "CREATE DATABASE sharkey OWNER sharkey" -U postgres
}

# Function to find a random unused port
# It generates a random port number between 2000 and 65000
# and checks if it is in use. If it is in use, it recursively
# calls itself until an unused port is found.
function random_unused_port {
    local port=$(shuf -i 2000-65000 -n 1)
    netstat -lat | grep $port > /dev/null
    if [[ $? == 1 ]] ; then
        echo $port
    else
        random_unused_port
    fi
}

# Function to create a Redis server on a random unused port
# It exports the port number to the REDIS_PORT environment variable
# and starts the Redis server with log level set to warning.
# It waits until the Redis server is ready to accept connections.
create_redis_on_random_port() {
	export REDIS_PORT=$(random_unused_port)
	redis-server --port $REDIS_PORT --loglevel warning &
	until redis-cli -p $REDIS_PORT ping; do sleep 1; done
	echo "Redis started on port $REDIS_PORT"
}

pick_sharkey_port() {
	export SHARKEY_PORT=$(random_unused_port)
}

# Function to copy the example configuration file and update it with the PostgreSQL and Redis settings.
# Arguments:
#   $1: The destination file path (optional). Defaults to `.config/default.yml`.
copy_and_update_config() {
  local dest_file=.config/default.yml
  cp .config/example.yml $dest_file
  yq -i -Y ".db.host = \"$PGDATA\"" $dest_file
  yq -i -Y ".redis.port = $REDIS_PORT" $dest_file
  yq -i -Y ".port = $SHARKEY_PORT" $dest_file
}

# Function to stop the PostgreSQL server; $PGDATA must be set
stop_psql() {
	pg_ctl -D "$PGDATA" stop
}

# Function to stop the Redis server
stop_redis() {
	redis-cli -p "$REDIS_PORT" shutdown
}

# Function to stop both PostgreSQL and Redis servers
stop_databases() {
	stop_psql
	stop_redis
}

# Function to start a fresh instance of the Sharkey application
# It sets up a temporary PostgreSQL database and a Redis server on a random port,
# updates the configuration file, and runs the application.
start_fresh_sharkey() {
	create_tmp_psql
	create_redis_on_random_port
	pick_sharkey_port
	trap stop_databases EXIT

	copy_and_update_config
  pnpm run migrateandstart
}

start_fresh_sharkey

firefox http://localhost:$SHARKEY_PORT --marionette --new-instance